Conductance quantization and snake states in graphene magnetic waveguides
arXiv:0708.1876 · doi:10.1103/PhysRevB.77.081404
Abstract
We consider electron waveguides (quantum wires) in graphene created by suitable inhomogeneous magnetic fields. The properties of uni-directional snake states are discussed. For a certain magnetic field profile, two spatially separated counter-propagating snake states are formed, leading to conductance quantization insensitive to backscattering by impurities or irregularities of the magnetic field.
5 pages, 4 figures, final version accepted as Rapid Comm. in PRB